01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: /**
19: * @author Evgueni V. Brevnov, Roman S. Bushmanov
20: * @version $Revision$
21: */package java.lang;
22:
23: import junit.framework.TestCase;
24:
25: /**
26: * tested class: java.lang.Class
27: * tested method: getDeclaringClass
28: */
29: public class ClassTestGetDeclaringClass extends TestCase {
30:
31: /**
32: * Declaring class of the primitive types should be null.
33: *
34: */
35: public void test1() {
36: Class c = Integer.TYPE.getDeclaringClass();
37: assertNull("null expected", c);
38: }
39:
40: /**
41: * Declaring class of the arrays should be null.
42: *
43: */
44: public void test2() {
45: Class c = new int[0].getClass().getDeclaringClass();
46: assertNull("null expected", c);
47: }
48:
49: /**
50: * The chain of inner classes and interfaces.
51: *
52: */
53: public void test3() {
54: Class c = Inner1.Inner2.Inner3.class.getDeclaringClass();
55: assertSame("objects differ", Inner1.Inner2.class, c);
56: c = c.getDeclaringClass();
57: assertSame("objects differ", Inner1.class, c);
58: c = c.getDeclaringClass();
59: assertSame("objects differ", getClass(), c);
60: c = c.getDeclaringClass();
61: assertNull("null expected", c);
62: }
63:
64: private interface Inner1 {
65: public interface Inner2 {
66: class Inner3 {
67: }
68: }
69: }
70: }
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